The asymmetric synthesis and conformational analysis of new C 2 -symmetric macrocycles derived from head-to-head linked α -amino acids and benzene or pyridine
作者:Patrick D Bailey、Simon R.L Everitt、Keith M Morgan、Andrew G Brewster
DOI:10.1016/s0040-4020(00)01126-1
日期:2001.2
The synthesis of several novel 15–18-membered macrocycles containing 1,3-disubstituted benzene or 2,6-disubstituted pyridine in a chiral environment is described. The syntheses used a series of di(Nα-tosyl-l-alanylamido)alkanes, which could be prepared in good yield. The macrocyclisation reaction with 1,3-di(bromomethyl)benzene or 2,6-di(bromomethyl)pyridine was facilitated by the use of caesium carbonate